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听力原文：The company, which was not the sole source of the pollution but is the only business working on the cleanup, has already spent several million dollars installing ventilation systems and creating a network of wells, pumps and filters to extract chemical contaminants from groundwater. The vapor problem came to light in 2003 as a result of air-quality tests sought by residents.
The vapor problem was mainly caused by the chemical containments from the ground water out of the company.
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Which market is Ubix traded on？
听力原文：Dozens of valuable paintings and frescoes were badly damaged when rainwater poured through a roof at the state museum. As freak rainstorms lashed in the central and southern sections of the state, part of the museum's roof which was scheduled to be repaired collapsed and water cascaded into two storerooms.
What part of the museum flooded？
根据《合同法》的规定，下列关于合同效力说法正确的是（)。A．甲乙签订买卖合同，约定如果A货物在10月20根据《合同法》的规定，下列关于合同效力说法正确的是()。
In the future, people may not use chemicals to propel spacecraft.
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